Cita APA (7th ed.)

Etherton, A. R. B. (1994). General Certificate English. Nelson.

Cita Chicago (17th ed.)

Etherton, A. R. B. General Certificate English. Walton-on-Thames: Nelson, 1994.

Cita MLA (8th ed.)

Etherton, A. R. B. General Certificate English. Nelson, 1994.